The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 24, 2021
Filed:
Jan. 26, 2017
Ntn Corporation, Osaka, JP;
NTN CORPORATION, Osaka, JP;
Abstract
Provided is an electric actuator (), including: a motor part (A); and a motion conversion mechanism part (B). The motion conversion mechanism part (B) includes: a ball screw shaft (); and a ball screw nut (), which is rotatably fitted to an outer periphery of the ball screw shaft (), and is provided so as to be capable of transmitting torque with a rotor () of the motor part (A) rotatably supported through intermediation of a rolling bearing (). The ball screw shaft () advances toward one side in the axial direction or retreats toward another side in the axial direction in accordance with a rotation direction of the ball screw nut (). In the electric actuator (), a needle roller bearing () serving as a thrust bearing is arranged adjacent to the ball screw nut () on the another side in the axial direction.